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Removal CAUTION: The color on the rear face of the drive pinion nut is critical to this repair. Use the same color new drive pinion nut for installation. If a new collapsible spacer must be installed for pinion bearing preload reduction, install the nut supplied with the new spacer or damage to the component may occur. 1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Section 100-02. 2. Remove the brake disc. For additional information, refer to Section 206-04. 3. Index-mark the driveshaft flange and pinion flange for correct alignment during installation. 4. Remove the 4 driveshaft flange bolts. 5. NOTE: The driveshaft centering socket yoke fits tightly on the pinion flange pilot. Never hammer on the driveshaft or any of its components to disconnect the driveshaft centering socket yoke from the pinion flange. Pry only in the area shown with a suitable tool to disconnect the driveshaft centering socket yoke from the pinion flange. Using a suitable tool as shown, disconnect the driveshaft centering socket yoke from the pinion flange. ? Using mechanic’s wire, position the driveshaft aside. 6. Using a Nm (lb-in) torque wrench on the pinion nut, record the torque required to maintain rotation of the pinion gear through several revolutions. 7. Using the special tool to hold the pinion flange, remove and discard the pinion nut. 8. Index-mark the pinion flange in relation to the drive pinion stem to make sure of correct alignment during installation. 9. Using the special tool, remove the pinion flange. 10. Force up on the metal flange of the drive pinion seal. Install gripping pliers and strike with a hammer until the drive pinion seal is removed. Installation 1. Lubricate the new drive pinion seal with grease. 2. Using the special tool, install a new drive pinion seal. 3. Lubricate the pinion flange splines with axle lubricant. 4. NOTE: Disregard the scribe marks if a new pinion flange is being installed.

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Removal Procedure 1. 2. 3. 4. 5. 6. Raise the vehicle. Remove the tire and wheel assemblies. Remove the brake drums Remove the axle shafts. Remove the differential. Remove the drive pinion from the axle. 7. Press the bearing off of the pinion using theJ 22912-B . 8. Remove the shim. 9. Remove the drive pinion bearing cups from the axle housing using a hammer and a brass drift in the slots provided. Move the drift back and forth between one side of the cup and the other in order to work the cups out of the housing evenly. Installation Procedure 1. Install the outer pinion bearing cup using the J 8611-01 (8.6 inch axle) (2), or the J 7818 (9.5 inch axle) (2) and the J 8092 (1). 2. Install the inner pinion bearing cup using the J 8608 (8.6 inch axle) (2), or the J 22306 (9.5 inch axle) (2) and the J 8092 (1). 3. Determine the selective shim thickness for the pinion. 4. Install the selective shim between the inner pinion bearing and the shoulder on the gear. 5. Install the inner pinion bearing using the J 24433 (8.6 inch axle) or the J 36614 (9.5 inch axle). Press the bearing on until the cone seats on the pinion shim. 6. Install a new collapsible spacer. 7. Install the pinion into the axle housing. 8. Install the outer pinion bearing onto the pinion. 9. Install a new pinion oil seal and the pinion yoke. 10. Install the differential. 11. Install the brake drums. 12. Install the tire and wheel assemblies. 13. Fill the axle with lubricant. Use the proper fluid. 14. Lower the vehicle.

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Condition General Motors has decided that all 1997-1998 Buick Regal GS and Pontiac Grand Prix GTP model vehicles equipped with L67 3.8L V6 engines, located in the high corrosion provinces of Newfoundland, Nova Scotia, Prince Edward Island, New Brunswick, Quebec and Ontario, may develop an electrical open in the fuel pump resistor. This condition prevents operation of the fuel pump and the engine will not run. Correction Dealers are to install a new resistor on the plenum with an aesthetic cover. Vehicles Involved Involved are all 1997-1998 Buick Regal GS and Pontiac Grand Prix GTP model vehicles equipped with L67 3.8L V6 engines and built within these VIN breakpoints: